Question

cell is a structural and functional unit of life.what happens when cell dies ?

Answer 1

cell is a unit of structure, functions, heredity. All living cells aise onl from the pre-existing cells.
when a cell dies, all the metabolic activities taking place inside it stops. Cell division fails to occurs.All the body functions gradually stops. The body fails to secrete glucose and thus our body doesn't gets food as well as energy and it dies. 

Answer 2

If cell will die.All the metabolic reactions will stop and all the activities will stop and human being will not be able to survive and hence die.